120mm PIR Insulation 8’X4′

Our 120mm PIR insulation boards feature a polyisocyanurate (PIR) core with aluminium foil on both sides, combining strength and excellent thermal performance. Supplied in convenient 8x4ft boards, they are lightweight yet durable, making them easy to cut and fit on-site, which helps save both time and labour costs. Highly regarded for their heat retention, moisture resistance, and fire safety, these boards are ideal for both residential and commercial applications.

While commonly used as 120mm floor insulation, these boards are also perfect for insulating walls, roofs, and timber joists. They are suitable for a wide range of projects, from new builds to refurbishment work. For other requirements, Mitcham Builders Merchants stocks PIR boards in thicknesses ranging from 25mm to 120mm, ensuring you can find the right solution for your project.

As South London’s largest independent builders’ merchant, we offer all the building materials, fixings, and tools you need under one roof. Our helpful team is on hand to provide advice and guidance, and all products are available to order online with fast delivery or can be browsed in store at our Croydon branch.